WALTER AG
98Patents
59Active
98Granted
48Portfolio score
Filing activity: Feb 10, 1987 → Mar 1, 2022 · 10 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5658100A | Interlocking, or form fitting cutting bit or chip | Emerging Cross-Sectional Technologies | 64 | Expired |
| US6921233B2 | Cutter insert and milling tool | Emerging Cross-Sectional Technologies | 48 | Expired |
| US6322296A | Precision milling cutter equipped with cutting tips | Emerging Cross-Sectional Technologies | 38 | Expired |
| US5720583A | Cutting bit, in particular indexable cutting bit | Emerging Cross-Sectional Technologies | 34 | Expired |
| US7306409B2 | Cutting insert having a rake surface and a plateau surface separated by a step | Emerging Cross-Sectional Technologies | 34 | Expired |
| US6436519B2 | Cutting tool with multilayer, wear-resistant coating | Emerging Cross-Sectional Technologies | 31 | Expired |
| US5951213A | Milling cutter, particularly for copying, and cutting insert therefor | Emerging Cross-Sectional Technologies | 25 | Expired |
| US5704740A | Drilling tool, particularly for metallic materials | Emerging Cross-Sectional Technologies | 23 | Expired |
| US5911548A | Tool for the production of arc-shaped grooves | Emerging Cross-Sectional Technologies | 21 | Expired |
| US5542793A | Rotary cutting tool with axially precision positioned end cutting inserts | Emerging Cross-Sectional Technologies | 19 | Expired |
| US5738564A | Numerically controlled grinding machine for grinding workpieces, in particular tools | Performing Operations; Transporting | 19 | Expired |
| US6682274B2 | Cutting insert with wear detection | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5676505A | Method and milling tool to make deep grooves in a workpiece, especially in rotors of generators and turbines | Emerging Cross-Sectional Technologies | 18 | Expired |
| US6290571A | Virtual teach-in system | Emerging Cross-Sectional Technologies | 16 | Expired |
| US6030153A | Milling tool with axial adjustment | Emerging Cross-Sectional Technologies | 14 | Expired |
| US5755536A | indexable cutting insert | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6449526B1 | Machine tool with automatic process control and monitoring | Physics | 14 | Expired |
| US7799420B2 | Method for producing a nonostructured functional coating and a coating that can be produced according to said method | Emerging Cross-Sectional Technologies | 13 | Expired |
| US8025991B2 | Cutting tool with oxide coating | Chemistry; Metallurgy | 13 | Active |
| US10343222B2 | Parting blade and grooving and parting-off tool | Performing Operations; Transporting | 12 | Active |
| US6617058B2 | Cutting tool with a carbonitride coating | Emerging Cross-Sectional Technologies | 9 | Expired |
| US8568064B2 | Substrate plate for double-sided indexable cutting inserts | Emerging Cross-Sectional Technologies | 9 | Active |
| US6234881A | Grinding machine for forming chip-producing cutting tools | Performing Operations; Transporting | 7 | Expired |
| US9539653B2 | Twist drill | Emerging Cross-Sectional Technologies | 7 | Active |
| US6616387B2 | Metal cutting tool with direct cutting plate arrangement | Emerging Cross-Sectional Technologies | 7 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.